The court said it was evident that the accused was suffering from bipolar disorder, a mental condition marked by alternating periods of elation and depression, and was going through its effect at the time of the alleged offence.
It said that the man was liable to get the protection of section 84 (act of a person of unsound mind) of the IPC.
"Hence, in my considered opinion, no offence seems to have been done by the accused as the same was committed while he was not having mental fitness expected of a person of sound mind. Hence, no offence is made out against the accused in the present case. The accused stands discharged in the case," Metropolitan Magistrate Purva Sareen said.
The court discharged him of the alleged offences under sections 354 (outraging modesty of a woman), 506 (criminal intimidation) and 509 (uttering word and making gesture intended to insult modesty of a woman) of the IPC.
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When the woman asked the accused to sit properly, he kept staring at her and also hit her hard on the right ear and started shouting some religious words, the complaint said.
It also said that the man threatened other passengers with dire consequences and endangered the safety of the aircraft.
When the flight landed in Delhi, a complaint was made at Domestic Airport Police Station and an FIR was lodged.
It said that after due verification of the documents, the report was filed by the investigation officer according to which the man was was suffering from bipolar disorder for the last 10-12 years and his medical papers were found genuine.